Not Scary At All

Richie gets home from tour to find a creature from his nightmares: Eddie's new pet and seemingly best friend.

Richie knew Eddie would be staying at home while he went on tour. He knew that Eddie might get lonely, despite declining the claim. So, he called up the other losers. They planned to come chill with Eddie and keep him company, and he expected to see them when he got back from tour. What Richie did not expect was the small fluffy dog sat in the front hallway as he walked into his own house.

All characters from the movies and novel IT.
Ships: Reddie, Benverly, Stanlonbrough